PCF8578T/1,112 NXP Semiconductors, PCF8578T/1,112 Datasheet - Page 13

• Manufacturer Part Number: PCF8578T/1,112
• Description: IC LCD DRIVER DOT MATRIX 56-VSOP
• Manufacturer: NXP Semiconductors

Specifications of PCF8578T/1,112

• Package / Case: 56-VSOP
• Display Type: LCD
• Configuration: Dot Matrix
• Interface: I²C
• Voltage - Supply: 2.5 V ~ 6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Maximum Clock Frequency: 3.3 KHz
• Operating Supply Voltage: 2.5 V to 6 V
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 150 C
• Maximum Supply Current: 50 mA
• Minimum Operating Temperature: - 65 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Digits Or Characters: -
• Lead Free Status / Rohs Status: Details
• Other names: 568-3561-5; 935278868112; PCF8578TD

Philips Semiconductors
2003 Apr 14
LCD row/column driver for
dot matrix graphic displays
V state 1 (t)
V state 2 (t)
ROW 1
R1 (t)
ROW 2
R2 (t)
COL 1
C1 (t)
COL 2
C2 (t)
V
V
V op
0.2 V op
0 V
0.2 V op
V op
V op
0.6 V op
0.2 V op
0 V
0.2 V op
0.6 V op
V op
V
V
V DD
V 2
V
V
V
V
V DD
V 2
V
V
V
V
V DD
V 2
V
V
V
V
V DD
V 2
V
V
V
V
on(rms)
off(rms)
state 1
state 2
V
V
3
4
5
LCD
3
4
5
LCD
3
4
5
LCD
3
4
5
LCD
op
op
(t) = C1(t)
(t) = C2(t)
=
=
Fig.8 LCD drive mode waveforms for 1 : 16 multiplex rate.
16
1
2 (
16
16
(
16 1
R1(t):
R2(t):
16 1
(
16 1
16 1
)
)
2
= 0.254
)
= 0.316
T frame
13
V
V
general relationship (n = multiplex rate)
on(rms)
off(rms)
V
V
op
op
=
=
1
n
2 (
n
(
n
n 1
(
n 1
n
n 1
)
1
)
2
)
MSA836
dot matrix
1:16 multiplex rate
Product specification
state 1 (OFF)
state 2 (ON)
PCF8578